import com.google.ipc.invalidation.common.ProtoValidator.Descriptor; //导入依赖的package包/类
/** Returns whether {@code field} is present in {@code message}. */
@Override
@SuppressWarnings("unchecked")
public boolean hasField(MessageLite rawMessage, Descriptor field) {
  Preconditions.checkNotNull(rawMessage);
  Preconditions.checkNotNull(field);
  AndroidSchedulerEvent message = (AndroidSchedulerEvent) rawMessage;
  if (field == VERSION) {
    return message.hasVersion();
  }
  if (field == EVENT_NAME) {
    return message.hasEventName();
  }
  if (field == TICL_ID) {
    return message.hasTiclId();
  }
  throw new IllegalArgumentException("Bad descriptor: " + field);
}
 

import com.google.ipc.invalidation.common.ProtoValidator.Descriptor; //导入依赖的package包/类
/** Returns whether {@code field} is present in {@code message}. */
@Override
@SuppressWarnings("unchecked")
public boolean hasField(MessageLite rawMessage, Descriptor field) {
  Preconditions.checkNotNull(rawMessage);
  Preconditions.checkNotNull(field);
  ServerHeader message = (ServerHeader) rawMessage;
  if (field == PROTOCOL_VERSION) {
    return message.hasProtocolVersion();
  }
  if (field == CLIENT_TOKEN) {
    return message.hasClientToken();
  }
  if (field == REGISTRATION_SUMMARY) {
    return message.hasRegistrationSummary();
  }
  if (field == SERVER_TIME_MS) {
    return message.hasServerTimeMs();
  }
  if (field == MESSAGE_ID) {
    return message.hasMessageId();
  }
  throw new IllegalArgumentException("Bad descriptor: " + field);
}
 

import com.google.ipc.invalidation.common.ProtoValidator.Descriptor; //导入依赖的package包/类
/** Returns the {@code field} from {@code message}. */
@Override
@SuppressWarnings("unchecked")
public Object getField(MessageLite rawMessage, Descriptor field) {
  Preconditions.checkNotNull(rawMessage);
  Preconditions.checkNotNull(field);
  ClientVersion message = (ClientVersion) rawMessage;
  if (field == VERSION) {
    return message.getVersion();
  }
  if (field == PLATFORM) {
    return message.getPlatform();
  }
  if (field == LANGUAGE) {
    return message.getLanguage();
  }
  if (field == APPLICATION_INFO) {
    return message.getApplicationInfo();
  }
  throw new IllegalArgumentException("Bad descriptor: " + field);
}
 

import com.google.ipc.invalidation.common.ProtoValidator.Descriptor; //导入依赖的package包/类
/** Returns the {@code field} from {@code message}. */
@Override
@SuppressWarnings("unchecked")
public Object getField(MessageLite rawMessage, Descriptor field) {
  Preconditions.checkNotNull(rawMessage);
  Preconditions.checkNotNull(field);
  AndroidTiclState message = (AndroidTiclState) rawMessage;
  if (field == VERSION) {
    return message.getVersion();
  }
  if (field == TICL_STATE) {
    return message.getTiclState();
  }
  if (field == METADATA) {
    return message.getMetadata();
  }
  throw new IllegalArgumentException("Bad descriptor: " + field);
}
 

import com.google.ipc.invalidation.common.ProtoValidator.Descriptor; //导入依赖的package包/类
/** Returns the {@code field} from {@code message}. */
@Override
@SuppressWarnings("unchecked")
public Object getField(MessageLite rawMessage, Descriptor field) {
  Preconditions.checkNotNull(rawMessage);
  Preconditions.checkNotNull(field);
  RegistrationFailureUpcall message = (RegistrationFailureUpcall) rawMessage;
  if (field == OBJECT_ID) {
    return message.getObjectId();
  }
  if (field == TRANSIENT) {
    return message.getTransient();
  }
  if (field == MESSAGE) {
    return message.getMessage();
  }
  throw new IllegalArgumentException("Bad descriptor: " + field);
}
 

import com.google.ipc.invalidation.common.ProtoValidator.Descriptor; //导入依赖的package包/类
/** Returns whether {@code field} is present in {@code message}. */
@Override
@SuppressWarnings("unchecked")
public boolean hasField(MessageLite rawMessage, Descriptor field) {
  Preconditions.checkNotNull(rawMessage);
  Preconditions.checkNotNull(field);
  InvalidateUpcall message = (InvalidateUpcall) rawMessage;
  if (field == ACK_HANDLE) {
    return message.hasAckHandle();
  }
  if (field == INVALIDATION) {
    return message.hasInvalidation();
  }
  if (field == INVALIDATE_UNKNOWN) {
    return message.hasInvalidateUnknown();
  }
  if (field == INVALIDATE_ALL) {
    return message.hasInvalidateAll();
  }
  throw new IllegalArgumentException("Bad descriptor: " + field);
}
 

import com.google.ipc.invalidation.common.ProtoValidator.Descriptor; //导入依赖的package包/类
/** Returns whether {@code field} is present in {@code message}. */
@Override
@SuppressWarnings("unchecked")
public boolean hasField(MessageLite rawMessage, Descriptor field) {
  Preconditions.checkNotNull(rawMessage);
  Preconditions.checkNotNull(field);
  InitializeMessage message = (InitializeMessage) rawMessage;
  if (field == CLIENT_TYPE) {
    return message.hasClientType();
  }
  if (field == NONCE) {
    return message.hasNonce();
  }
  if (field == APPLICATION_CLIENT_ID) {
    return message.hasApplicationClientId();
  }
  if (field == DIGEST_SERIALIZATION_TYPE) {
    return message.hasDigestSerializationType();
  }
  throw new IllegalArgumentException("Bad descriptor: " + field);
}