<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def validate(self):
 		"""Checks whether this OmapiStartupMessage matches the implementation. 		@raises OmapiError: 		"""

		if self.implemented_protocol_version != self.protocol_version:
			raise OmapiError("protocol mismatch")
		if self.implemented_header_size != self.header_size:
			raise OmapiError("header size mismatch")