Method lookup

src/main/java/wyil/lang/WyilFile.java:1489–1498

(WyilFile.Type type)

			}

			public T lookup(WyilFile.Type type) {
				for (int i = 1; i != operands.length; ++i) {
					Ref<T> candidate = (Ref<T>) operands[i];
					Decl.Named<?> n = candidate.get();
					if(n.getType().equals(type)) {
						return (T) n;
					}
				}
				throw new IllegalArgumentException("unable to find candidate declaration");
			}

			@SuppressWarnings("unchecked")
			public void resolve(T... items) {