@java.lang.Override
      public boolean equals(final java.lang.Object obj) {
        if (obj == this) {
          return true;
        }
        if (!(obj
            instanceof com.google.cloud.vertexai.api.SlackSource.SlackChannels.SlackChannel)) {
          return super.equals(obj);
        }
        com.google.cloud.vertexai.api.SlackSource.SlackChannels.SlackChannel other =
            (com.google.cloud.vertexai.api.SlackSource.SlackChannels.SlackChannel) obj;

        if (!getChannelId().equals(other.getChannelId())) return false;
        if (hasStartTime() != other.hasStartTime()) return false;
        if (hasStartTime()) {
          if (!getStartTime().equals(other.getStartTime())) return false;
        }
        if (hasEndTime() != other.hasEndTime()) return false;
        if (hasEndTime()) {
          if (!getEndTime().equals(other.getEndTime())) return false;
        }
        if (!getUnknownFields().equals(other.getUnknownFields())) return false;
        return true;
      }
<pre>
Optional. The ending timestamp for messages to import.
</pre>

<code>.google.protobuf.Timestamp end_time = 3 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/SlackSource.java