Method to

corpus/java/training/guava/base/CaseFormat.java:131–135

Converts the specified String str from this format to the specified format. A "best effort" approach is taken; if str does not conform to the assumed format, then the behavior of this method is undefined but we make a reasonable effort at converting anyway.

(CaseFormat format, String str)

   * the behavior of this method is undefined but we make a reasonable effort at converting anyway.
   */
  public final String to(CaseFormat format, String str) {
    checkNotNull(format);
    checkNotNull(str);
    return (format == this) ? str : convert(format, str);
  }

  /**
   * Enum values can override for performance reasons.