What can i use to solve this Question?$--$allow$-$builtincameltosnakecaseInstructionsWrite a function that converts a string from camelCase to snake$\_$case.If the string is empty, return an empty string.If the string is not camelCase, return the string unchanged.If the string is camelCase, return the snake$\_$case version of the string.For this exercise you need to know that camelCase has two different writing alternatives that will be accepted:lowerCamelCaseUpperCamelCaseRules for writing in camelCase:The word does not end on a capitalized letter $($CamelCasE$).$No two capitalized letters shall follow directly each other $($CamelCAse$).$Numbers or punctuation are not allowed in the word anywhere $($camelCase$1).$Expected functionfunc CamelToSnakeCase$($s string$)$ string$\{\}$UsageHere is a possible program to test your function:package mainimport $("$fmt$")$func main$()\{$fmt$.$Println$($CamelToSnakeCase$("$HelloWorld$"))$fmt$.$Println$($CamelToSnakeCase$("$helloWorld$"))$fmt$.$Println$($CamelToSnakeCase$("$camelCase$"))$fmt$.$Println$($CamelToSnakeCase$("$CAMELtoSnackCASE$"))$fmt$.$Println$($CamelToSnakeCase$("$camelToSnakeCase$"))$fmt$.$Println$($CamelToSnakeCase$("$hey$2"))\}$And its output:$ go run $.$Hello$\_$Worldhello$\_$Worldcamel$\_$CaseCAMELtoSnackCASEcamel$\_$To$\_$Snake$\_$Casehey$2$

dont use import to solve the question