@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    getSerializedSize();
    for (int i = 0; i < stringValues_.size(); i++) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, stringValues_.getRaw(i));
    }
    if (getLongValuesList().size() > 0) {
      output.writeUInt32NoTag(18);
      output.writeUInt32NoTag(longValuesMemoizedSerializedSize);
    }
    for (int i = 0; i < longValues_.size(); i++) {
      output.writeInt64NoTag(longValues_.getLong(i));
    }
    if (filterable_ != false) {
      output.writeBool(3, filterable_);
    }
    if (keywordSearchable_ != false) {
      output.writeBool(4, keywordSearchable_);
    }
    getUnknownFields().writeTo(output);
  }
<pre>
If the `keyword_searchable` flag is true, the keywords in custom fields are
searchable by keyword match.
If false, the values are not searchable by keyword match.

Default is false.
</pre>

<code>bool keyword_searchable = 4;</code>

@return The keywordSearchable.
java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/CustomAttribute.java