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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 verify(self, authenticators):
 		"""Verify this OMAPI message. 		False 		True 		False 		@type authenticators: {int: OmapiAuthenticatorBase} 		@rtype: bool 		"""

		try:
			return authenticators[self.authid]. sign(self.as_string(forsigning=True)) == self.signature
		except KeyError:
			return False