public Builder addAllowedProjectsBytes(com.google.protobuf.ByteString value) {
        if (value == null) {
          throw new NullPointerException();
        }
        checkByteStringIsUtf8(value);
        ensureAllowedProjectsIsMutable();
        allowedProjects_.add(value);
        bitField0_ |= 0x00000008;
        onChanged();
        return this;
      }
<pre>
Optional. Additional projects that are allowed to attach to the
workstation cluster's service attachment. By default, the workstation
cluster's project and the VPC host project (if different) are allowed.
</pre>

<code>repeated string allowed_projects = 4 [(.google.api.field_behavior) = OPTIONAL];
</code>

@param value The bytes of the allowedProjects to add.
@return This builder for chaining.
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationCluster.java