input: Write a python function to create a ReferenceItem object and convert it to a dictionary.
  assert create_and_convert_ref_item("example", "example_module", "example_usage", "example_short") == {"name": "example", "href": "", "module": "import example_module", "usage": "example_usage", "short": "example_short", "full": "", "fullest": "", "subitems": [], "copyright": ""}
  assert create_and_convert_ref_item("test", "test_module", "test_usage", "test_short") == {"name": "test", "href": "", "module": "import test_module", "usage": "test_usage", "short": "test_short", "full": "", "fullest": "", "subitems": [], "copyright": ""}
output: def create_and_convert_ref_item(name, module, usage, short):
      class ReferenceItem:
          def __init__(self, name, href, module, usage, short, full, fullest, subitems, copyright):
              self.name = name
              self.href = href
              self.module = module
              self.usage = usage
              self.short = short
              self.full = full
              self.fullest = fullest
              self.subitems = subitems
              self.copyright = copyright
  
          def to_dict(self):
              return {
                  "name": self.name,
                  "href": self.href,
                  "module": self.module,
                  "usage": self.usage,
                  "short": self.short,
                  "full": self.full,
                  "fullest": self.fullest,
                  "subitems": self.subitems,
                  "copyright": self.copyright
              }
  
      ref_item = ReferenceItem(name, "", f"import {module}", usage, short, "", "", [], "")
      return ref_item.to_dict()