docs: def ingest(self):
          """
          *ingest the contents of the directory of yaml files into a database*
  
          **Return:**
              - None
  
          **Usage:**
  
              To import an entire directory of yaml files into a database, use the following:
  
          .. code-block:: python 
  
              from fundamentals.mysql import yaml_to_database
              yaml2db = yaml_to_database(
                  log=log,
                  settings=settings,
                  dbConn=dbConn,
                  pathToInputDir="/path/to/yaml/directory",
                  deleteFiles=False
              ) 
              yaml2db.ingest() 
          """
          self.log.debug('starting the ``ingest`` method')
  
          for d in os.listdir(self.pathToInputDir):
              if os.path.isfile(os.path.join(self.pathToInputDir, d)) and "yaml" in d.lower():
                  self.add_yaml_file_content_to_database(
                      filepath=os.path.join(self.pathToInputDir, d),
                      deleteFile=self.deleteFiles
                  )
  
          self.log.debug('completed the ``ingest`` method')
          return None