Retrieves a list of regions.
list(profileId)
Retrieves a list of regions. Args: profileId: string, User profile ID associated with this request. (required) Returns: An object of the form: { # Region List Response "regions": [ # Region collection. { # Contains information about a region that can be targeted by ads. "kind": "dfareporting#region", # Identifies what kind of resource this is. Value: the fixed string "dfareporting#region". "countryDartId": "A String", # DART ID of the country to which this region belongs. "name": "A String", # Name of this region. "countryCode": "A String", # Country code of the country to which this region belongs. "regionCode": "A String", # Region code. "dartId": "A String", # DART ID of this region. }, ], "kind": "dfareporting#regionsListResponse", # Identifies what kind of resource this is. Value: the fixed string "dfareporting#regionsListResponse". }