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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 validate(self):
 """Validation of configuration to check for required values"""


        if not self.server.enabled:

            if self.security.signature_certificate_file is self.security.defaults['signature_certificate_file']:
                print("ISSUE: If you are not configuring a server, you need to set 'signature_certificate_file'")

            if self.security.signature_private_key_file is self.security.defaults['signature_private_key_file']:
                print("ISSUE: If you are not configuring a server, you need to set 'signature_private_key_file'")

        else:

            if self.client.enabled:
                print("ISSUE: Client and server enabled at the same time?")

            if self.server.protocol is self.server.defaults['protocol']:
                if self.server.server_certificate_file is self.server.defaults['server_certificate_file'] or \
                                self.server.server_private_key_file is self.server.defaults['server_private_key_file']:
                   print("ISSUE: 'server_certificate_file' and/or 'server_private_key_file' are not configured and will be auto-generated.")


            if self.server.certification_authority_certificate_file is self.server.defaults['certification_authority_certificate_file'] or \
                            self.server.certification_authority_private_key_file is self.server.defaults['certification_authority_private_key_file']:
                print("ISSUE: 'certification_authority_certificate_file' and/or 'certification_authority_private_key_file' are not configured and will be auto-generated - this is NOT recommended.")

            if self.server.authentication_script is self.server.defaults['authentication_script']:
                print("ISSUE: No 'authentication_script' has been provided and all authentication requests will be rejected!")

        if self.client.enabled:

            if self.client.server_endpoint is self.client.defaults['server_endpoint']:
                print("ISSUE: You are running in client mode, but you are using a default server address.")

            if not self.client.disable_peer_verification is self.client.defaults['disable_peer_verification'] or \
                    not self.client.disable_host_verification is self.client.defaults['disable_host_verification']:
                print("ISSUE: Disabling peer/host verification is NOT recommended - AT ALL.")

            if self.client.username is self.client.defaults['username'] or \
                            self.client.password is self.client.defaults['password']:
                print("ISSUE: No username and/or password has been configured for a client.")

        if self.fscp.contact is self.fscp.defaults['contact']:

            if not self.server.enabled and not self.client.enabled:
                print("ISSUE: You have not defined any contact points while you are neither running as server nor client.")

        ## hostname_resolution_protocol=ipv4/ipv6
        ## ipv4_address_prefix_length=9.0.0.1/24
        ## ipv6_address_prefix_length=2aa1::1/8

        if self.security.authority_certificate_file is self.security.defaults['authority_certificate_file']:
            print("ISSUE: You need to set 'authority_certificate_file'")

        if self.tap_adapter.ipv4_address_prefix_length is self.tap_adapter.defaults['ipv4_address_prefix_length']:
            print("ISSUE: You are using the default network address - make sure you set a different ip for every machine 'ipv4_address_prefix_length'")