Salesforce Apex hashCode and equals implementation

Request.cls

public class Request {
    
    @InvocableVariable(label = 'Template Name' required=true)
    public String templateName;

    @InvocableVariable(label = 'To Number' required=true)
    public String toNumber;

    @InvocableVariable(label = 'whoId' required=true)
    public Id whoId;

    @InvocableVariable(label = 'WhatId' required=true)
    public Id whatId;

    public Integer hashCode()
    {
        return 17 + (31 * templateName.hashCode()) + (31 * toNumber.hashCode()) + (31 * String.valueOf(whoId).hashCode()) + (31 * String.valueOf(whatId).hashCode());
    }

    public Boolean equals(Object obj)
    {
        Request other = (Request) obj;
        return other != null && this.templateName == other.templateName && this.toNumber == other.toNumber && this.whoId == other.whoId && this.whatId == other.whatId;
    }
}