public Builder setSourceImageBytes(com.google.protobuf.ByteString value) {
          if (value == null) {
            throw new NullPointerException();
          }
          checkByteStringIsUtf8(value);
          sourceImage_ = value;
          bitField0_ |= 0x00000004;
          onChanged();
          return this;
        }
<pre>
Optional. Name of the disk image to use as the source for the disk.
Must be empty if
[source_snapshot][google.cloud.workstations.v1beta.WorkstationConfig.EphemeralDirectory.GcePersistentDisk.source_snapshot]
is set. Updating
[source_image][google.cloud.workstations.v1beta.WorkstationConfig.EphemeralDirectory.GcePersistentDisk.source_image]
will update content in the ephemeral directory after the workstation is
restarted. This field is mutable.
</pre>

<code>string source_image = 3 [(.google.api.field_behavior) = OPTIONAL];</code>

@param value The bytes for sourceImage to set.
@return This builder for chaining.
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfig.java