Types: add wildcard method for multiple bounds

In some cases -- especially internally -- it is helpful to have a
wildcard type with multiple upper and/or lower bounds. While this is not
allowed by the Java compiler at the source level, there are scenarios
where it is helpful to have such types when reasoning about generics.

Author: ctrueden

src/main/java/org/scijava/util/Types.java

@@ -675,6 +675,20 @@ public static WildcardType wildcard(final Type upperBound,
 		return new TypeUtils.WildcardTypeImpl(upperBound, lowerBound);
 	}
 
+	/**
+	 * Creates a new {@link WildcardType} with the given upper and/or lower
+	 * bounds.
+	 *
+	 * @param upperBounds Upper bounds of the wildcard, or null for none.
+	 * @param lowerBounds Lower bounds of the wildcard, or null for none.
+	 * @return The newly created {@link WildcardType}.
+	 */
+	public static WildcardType wildcard(final Type[] upperBounds,
+		final Type[] lowerBounds)
+	{
+		return new TypeUtils.WildcardTypeImpl(upperBounds, lowerBounds);
+	}
+
 	/**
 	 * Learn, recursively, whether any of the type parameters associated with
 	 * {@code type} are bound to variables.