groovy支持函数重载
def printSomething(param){
    println param
}
 
def printSomething(param01,param02){
    println param01+" "+param02
}
 
printSomething("hello")
printSomething("hello","world")
def printSomething(param){
    println param
}
 
def printSomething(param01,param02){
    println param01+" "+param02
}
 
printSomething("hello")
printSomething("hello","world")
