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Java project for connecting the Coinbase V2 API

There is a newer version: 1.2

package com.coinbase.util;

import java.util.function.Function;

/**
 * The MIT License (MIT)
 *
 *	Copyright (c) 2021 antlen
 *
 *	Permission is hereby granted, free of charge, to any person obtaining a copy
 *	of this software and associated documentation files (the "Software"), to deal
 *	in the Software without restriction, including without limitation the rights
 *	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *	copies of the Software, and to permit persons to whom the Software is
 *	furnished to do so, subject to the following conditions:
 *
 *	The above copyright notice and this permission notice shall be included in all
 *	copies or substantial portions of the Software.
 *
 *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *	SOFTWARE.
 *
 * ------------------------------------------------
 * Simple validation utility class.
 *
 * @author antlen
 */
public class ValidationUtils {

    /**
     * Throws a NullPointerException if t is null
     * @param t - the object to null check
     * @param name - the name of the property.
     * @param 
     */
    public static  void validateNotNull(T t, String name){
        if(t == null){
            throw new NullPointerException(name + " cannot be null.");
        }
    }

    /**
     * Runs the function on t and returns the result.  Will return an empty string if t is null.
     * @param t - the object to pass to the function if not null.
     * @param f - the function to run on t
     * @param 
     * @return
     */
    public static  String valueOrEmpty(T t, Function f){
        if(t == null) return "";
        return f.apply(t);
    }
}