processor/src/main/java/repacked/com/squareup/javawriter/JavaWriter.java
public JavaWriter emitSingleLineComment(String comment, Object... args) throws IOException {
    indent();
    out.write("// ");
    out.write(String.format(comment, args));
    out.write("\n");
    return this;
  }
public JavaWriter emitSingleLineComment(String comment, Object... args) throws IOException {
    indent();
    out.write("// ");
    out.write(String.format(comment, args));
    out.write("\n");
    return this;
  }
Emits a single line comment.