// The MetadataTypeAttribute identifies usersMetadata as the class
    // that carries additional metadata for the users class.
    [MetadataTypeAttribute(typeof(users.usersMetadata))]
    public partial class users
    {
      ...
 // This class allows you to attach custom attributes to properties
        // of the users class.
        //
        // For example, the following marks the Xyz property as a
        // required property and specifies the format for valid values:
        //    [Required]
        //    [RegularExpression("[A-Z][A-Za-z0-9]*")]
        //    [StringLength(32)]
        //    public string Xyz { get; set; }
        internal sealed class usersMetadata
        {

            // Metadata classes are not meant to be instantiated.
            private usersMetadata()
            {
            }
            [Display(Name = "Пароль", Order = 3)]
            public string password { get; set; }

            [DataMember]
            [Display(Order = 4, Name = "NewPassword")]
            public string NewPassword { get; set; }

       }

 // The MetadataTypeAttribute identifies usersMetadata as the class
    // that carries additional metadata for the users class.
    [MetadataTypeAttribute(typeof(users.usersMetadata))]
    public partial class users
    {
      ...
       // This class allows you to attach custom attributes to properties
        // of the users class.
        //
        // For example, the following marks the Xyz property as a
        // required property and specifies the format for valid values:
        //    [Required]
        //    [RegularExpression("[A-Z][A-Za-z0-9]*")]
        //    [StringLength(32)]
        //    public string Xyz { get; set; }
        internal sealed class usersMetadata
        {
               ...
            // Metadata classes are not meant to be instantiated.
            private usersMetadata()
            {
            }
            [Display(Name = "Пароль", Order = 3)]
            public string password { get; set; }
             ...
       }
          [DataMember]
          public string NewPassword { get; set; }
}