toCamelCase property
      
      String
      get
      toCamelCase
      
    
    
驼峰命名转换
Implementation
String get toCamelCase {
  return split(' ')
      .asMap()
      .map((i, word) =>
          MapEntry(i, i == 0 ? word.toLowerCase() : word.capitalize))
      .values
      .join();
}