snake_name_rule
Split -> It will split them by underline and convert them to lowercase. java_La_ngSt_rIng ->["java","la","ngst","ring"]
java_La_ngSt_rIng
["java","la","ngst","ring"]
Rename-> It will keep all letters lowercase ["JaVa","lang","String"] -> "java_lang_string"
["JaVa","lang","String"]