public String getSign() {
		StringBuilder builder = new StringBuilder();
		builder.append(returnType).append(" ")
			.append(name).append("(");
		for (int i=0; i<this.arguments.size(); i++) {
			if (i != 0) builder.append(" ,");
			builder.append(arguments.get(i).getType());
		}
		builder.append(")");
		return builder.toString();
	}