def __init__(self, version: str = "<STR_LIT>") -> None:
self.version = version  <EOL>if version != "<STR_LIT>" and version != '<STR_LIT>':<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>self.errors: List[str] = []  <EOL>self.warnings: List[str] = []  <EOL>self.summary: List[str] = []<EOL>
Args:
        version: 		The Loom file format version to validate against ("2.0.1" or "old")

Remarks:
        "old" version will accept files that lack the "row_graphs" and "col_graphs" groups