guava/src/com/google/common/primitives/ImmutableDoubleArray.java
public static ImmutableDoubleArray of(double e0, double e1, double e2, double e3) {
    return new ImmutableDoubleArray(new double[] {e0, e1, e2, e3});
  }
public static ImmutableDoubleArray of(double e0, double e1, double e2, double e3) {
    return new ImmutableDoubleArray(new double[] {e0, e1, e2, e3});
  }
Returns an immutable array containing the given values, in order.