def _TagSize(field_number):
"""Returns the number of bytes required to serialize a tag with this field
number."""
return _VarintSize(wire_format.PackTag(field_number, 0))
def TagBytes(field_number, wire_type):
"""Encode the given tag and return the bytes. Only called at startup."""
return _VarintBytes(wire_format.PackTag(field_number, wire_type))
