MrpObject A private struct for internal use only. The definition of this structure is not publically available. The base class for objects in libmrproject. @mrpobject: the object which received the signal. @arg1: @arg2: @mrpobject: the object which received the signal. @object: @object: @object: @first_property_name: @Varargs: @object: @first_property_name: @Varargs: @object: @first_property_name: @var_args: @object: @first_property_name: @var_args: @object: @Returns: @object: @property: @value: @object: @property: @value: