The SetActiveToolSchema method will be called after the SetToolParameters method is called and before the AddMetaSchemaExtensions is called. This method identifies the active tool schema (i.e., the Name property from the ToolSchema object in the schema) that should be used. Subsequent calls to GetMapSchemaFilename, GetCompSchemaName and Connect should use this value to determine the appropriate information to return (presuming the application supports multiple map schemas).
The value passed in this method may have a value of "". In this case the metadata adapter should choose the appropriate default map schema.