parameters: (self)
return_statement: return self.fileName
docstring: @rtype:  str
          @return: Filename of the main module of the process.
function: def get_filename(self):
          """
          @rtype:  str
          @return: Filename of the main module of the process.
          """
          if not self.fileName:
              self.fileName = self.get_image_name()
          return self.fileName
function_tokens: def get_filename ( self ) : if not self . fileName : self . fileName = self . get_image_name ( ) return self . fileName