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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_file(self, path):
 """Add a resource file or library file to the database"""

        libdoc = LibraryDocumentation(path)
        if len(libdoc.keywords) > 0:
            if libdoc.doc.startswith("Documentation for resource file"):
                # bah! The file doesn't have an file-level documentation
                # and libdoc substitutes some placeholder text.
                libdoc.doc = ""

            collection_id = self.add_collection(path, libdoc.name, libdoc.type,
                                                libdoc.doc, libdoc.version,
                                                libdoc.scope, libdoc.named_args,
                                                libdoc.doc_format)
            self._load_keywords(collection_id, libdoc=libdoc)