public Builder mergeStartCoordinates(com.google.type.LatLng value) {
      if (startCoordinatesBuilder_ == null) {
        if (((bitField0_ & 0x00000002) != 0)
            && startCoordinates_ != null
            && startCoordinates_ != com.google.type.LatLng.getDefaultInstance()) {
          getStartCoordinatesBuilder().mergeFrom(value);
        } else {
          startCoordinates_ = value;
        }
      } else {
        startCoordinatesBuilder_.mergeFrom(value);
      }
      if (startCoordinates_ != null) {
        bitField0_ |= 0x00000002;
        onChanged();
      }
      return this;
    }
<pre>
Required. The latitude and longitude of the location to calculate the
commute time from.
</pre>

<code>.google.type.LatLng start_coordinates = 2 [(.google.api.field_behavior) = REQUIRED];
</code>
java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/CommuteFilter.java