def create_new_diagram_graph(self, diagram_name="<STR_LIT>"):
self.__init__()<EOL>diagram_id = BpmnDiagramGraph.id_prefix + str(uuid.uuid4())<EOL>self.diagram_attributes[consts.Consts.id] = diagram_id<EOL>self.diagram_attributes[consts.Consts.name] = diagram_name<EOL>
Initializes a new BPMN diagram and sets up a basic diagram attributes.
Accepts a user-defined values for following attributes:
(Diagram element)

- name - default value empty string.

:param diagram_name: string type. Represents a user-defined value of 'BPMNDiagram' element
    attribute 'name'. Default value - empty string.