* reference; otherwise returns {@link Optional#absent}.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this method is equivalent to Java 8's
   * {@code Optional.ofNullable}.
   */
  public static <T> Optional<T> fromNullable(@CheckForNull T nullableReference) {
    return (nullableReference == null) ? Optional.<T>absent() : new Present<T>(nullableReference);
  }

  /**

    }
    for (param in method.parameterList.parameters) {
        append(getBinaryPresentationWithCorrection(param.type))
    }
    append(")")
    append(getBinaryPresentationWithCorrection(Optional.ofNullable(method.returnType).orElse(PsiType.VOID)))
}

private fun getBinaryPresentationWithCorrection(psiType: PsiType): String =

            private final Map<Artifact, Path> paths = new ConcurrentHashMap<>();

            @Override
            public Optional<Path> getPath(Artifact artifact) {
                return Optional.ofNullable(paths.get(artifact));
            }

            @Override
            public void setPath(Artifact artifact, Path path) {
                paths.put(artifact, path);
            }
        };
    }

                        unmappedCount -= 1
                        // Here we intentionally use the 'Optional' wrapper to make 'computeIfAbsent' work smoothly
                        Optional.ofNullable(computeTarget(element))
                    }
                }

                if (unmappedCount > 0) {
                    element.acceptChildren(this)
                }
            }
        }

   * reference; otherwise returns {@link Optional#absent}.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this method is equivalent to Java 8's
   * {@code Optional.ofNullable}.
   */
  public static <T> Optional<T> fromNullable(@CheckForNull T nullableReference) {
    return (nullableReference == null) ? Optional.<T>absent() : new Present<T>(nullableReference);
  }

  Optional() {}