code: func NewShortFieldDescriptor(nullable NullableColumn) FieldDescriptor {
  	return newFixedLengthFieldDescriptor(
  		mysql_proto.FieldType_SHORT,
  		nullable,
  		2,
  		func(b []byte) interface{} { return uint64(LittleEndian.Uint16(b)) })
  }
docs: // This returns a field descriptor for FieldType_SHORT (i.e., Field_shart)