code: def get_step_table_names(steps):
      
      table_names = set()
      for s in steps:
          table_names |= get_step(s)._tables_used()
      return list(table_names)
docs: Returns a list of table names injected into the provided steps.
  
      Parameters
      ----------
      steps: list of str
          Steps to gather table inputs from.
  
      Returns
      -------
      list of str