/// Add the specified member to the set stored at key. Specified members that are already a member of this set are ignored. If key does not exist, a new set is created before adding the specified members.
/// </summary>
/// <returns>True if the specified member was not already present in the set, else False</returns>
/// Add the specified member to the set stored at key. Specified members that are already a member of this set are ignored. If key does not exist, a new set is created before adding the specified members.
/// </summary>
/// <returns>True if the specified member was not already present in the set, else False</returns>
/// Add the specified members to the set stored at key. Specified members that are already a member of this set are ignored. If key does not exist, a new set is created before adding the specified members.
/// </summary>
/// <returns>the number of elements that were added to the set, not including all the elements already present into the set.</returns>
/// Return the distance between two members in the geospatial index represented by the sorted set.
/// </summary>
/// <returns>The command returns the distance as a double (represented as a string) in the specified unit, or NULL if one or both the elements are missing.</returns>
/// Return valid Geohash strings representing the position of one or more elements in a sorted set value representing a geospatial index (where elements were added using GEOADD).
/// </summary>
/// <returns>The command returns an array where each element is the Geohash corresponding to each member name passed as argument to the command.</returns>
/// Return valid Geohash strings representing the position of one or more elements in a sorted set value representing a geospatial index (where elements were added using GEOADD).
/// </summary>
/// <returns>The command returns an array where each element is the Geohash corresponding to each member name passed as argument to the command.</returns>
/// Return the positions (longitude,latitude) of all the specified members of the geospatial index represented by the sorted set at key.
/// </summary>
/// <returns>The command returns an array where each element is a two elements array representing longitude and latitude (x,y) of each member name passed as argument to the command.Non existing elements are reported as NULL elements of the array.</returns>
/// Return the positions (longitude,latitude) of all the specified members of the geospatial index represented by the sorted set at key.
/// </summary>
/// <returns>The command returns an array where each element is a two elements array representing longitude and latitude (x,y) of each member name passed as argument to the command.Non existing elements are reported as NULL elements of the array.</returns>
/// Return the members of a sorted set populated with geospatial information using GEOADD, which are within the borders of the area specified with the center location and the maximum distance from the center (the radius).
/// Return the members of a sorted set populated with geospatial information using GEOADD, which are within the borders of the area specified with the center location and the maximum distance from the center (the radius).
/// Decrements the number stored at field in the hash stored at key by decrement. If key does not exist, a new key holding a hash is created. If field does not exist or holds a string that cannot be interpreted as integer, the value is set to 0 before the operation is performed.
/// Add the specified member to the set stored at key. Specified members that are already a member of this set are ignored. If key does not exist, a new set is created before adding the specified members.
/// </summary>
/// <returns>True if the specified member was not already present in the set, else False</returns>
/// Add the specified member to the set stored at key. Specified members that are already a member of this set are ignored. If key does not exist, a new set is created before adding the specified members.
/// </summary>
/// <returns>True if the specified member was not already present in the set, else False</returns>
/// Add the specified members to the set stored at key. Specified members that are already a member of this set are ignored. If key does not exist, a new set is created before adding the specified members.
/// </summary>
/// <returns>the number of elements that were added to the set, not including all the elements already present into the set.</returns>
/// Return the distance between two members in the geospatial index represented by the sorted set.
/// </summary>
/// <returns>The command returns the distance as a double (represented as a string) in the specified unit, or NULL if one or both the elements are missing.</returns>
/// Return valid Geohash strings representing the position of one or more elements in a sorted set value representing a geospatial index (where elements were added using GEOADD).
/// </summary>
/// <returns>The command returns an array where each element is the Geohash corresponding to each member name passed as argument to the command.</returns>
/// Return valid Geohash strings representing the position of one or more elements in a sorted set value representing a geospatial index (where elements were added using GEOADD).
/// </summary>
/// <returns>The command returns an array where each element is the Geohash corresponding to each member name passed as argument to the command.</returns>
/// Return the positions (longitude,latitude) of all the specified members of the geospatial index represented by the sorted set at key.
/// </summary>
/// <returns>The command returns an array where each element is a two elements array representing longitude and latitude (x,y) of each member name passed as argument to the command.Non existing elements are reported as NULL elements of the array.</returns>
/// Return the positions (longitude,latitude) of all the specified members of the geospatial index represented by the sorted set at key.
/// </summary>
/// <returns>The command returns an array where each element is a two elements array representing longitude and latitude (x,y) of each member name passed as argument to the command.Non existing elements are reported as NULL elements of the array.</returns>
/// Return the members of a sorted set populated with geospatial information using GEOADD, which are within the borders of the area specified with the center location and the maximum distance from the center (the radius).
/// Return the members of a sorted set populated with geospatial information using GEOADD, which are within the borders of the area specified with the center location and the maximum distance from the center (the radius).
/// Increments the number stored at field in the hash stored at key by increment. If key does not exist, a new key holding a hash is created. If field does not exist or holds a string that cannot be interpreted as integer, the value is set to 0 before the operation is performed.