The Javadoc for com.google.cloud.Timestamp.parseTimestamp says that the input doesn't have a timezone offset and ends with "Z":

However, it seems to parse offsets correctly with google-cloud-core 1.93.7:

import com.google.cloud.Timestamp;
import org.junit.Test;

public class TimestampTest {

  @Test
  public void parseTimestamp() {
    System.err.println(Timestamp.parseTimestamp("2020-07-10T14:03:00-07:00"));
    System.err.println(Timestamp.parseTimestamp("2020-07-10T14:03:00Z"));
  }
}

2020-07-10T21:03:00Z
2020-07-10T14:03:00Z

I would expect either of the following:

1. parseTimestamp handles a timezone offset, and the documentation doesn't specify that there is no offset.
2. parseTimestamp doesn't handle a timezone offset and throws an exception when one is present.

This issue may be related to googleapis/google-cloud-java#4583. The fix changed the parsing logic but not the documentation.