parameters: (self)
docstring: Return the directory generated diagrams should be stored in or
          None if they should not be created
docstring_summary: Return the directory generated diagrams should be stored in or
          None if they should not be created
docstring_tokens: Return the directory generated diagrams should be stored in or None if they should not be created
function: def diagrams_dir(self):
          """Return the directory generated diagrams should be stored in or
          None if they should not be created
          """
          diagrams_dir = os.environ.get("DIAGRAMS_DIR", None)
          if diagrams_dir is None or diagrams_dir == "":
              return None
          else:
              return diagrams_dir
function_tokens: def diagrams_dir ( self ) : diagrams_dir = os . environ . get ( "DIAGRAMS_DIR" , None ) if diagrams_dir is None or diagrams_dir == "" : return None else : return diagrams_dir