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Change class fields from snake case to camel case

Change the class fields in this Scala class from snake case to camel case

Start file

case class User(
  id: Long,
  username: String,
  email: String,
  first_name: String,
  last_name: String,
  age: Int,
  gender: String,
  phone_number: String,
  address: String,
  city: String,
  country: String,
  postal_code: String,
  occupation: String,
  company: String,
  salary: Double,
  is_active: Boolean,
  registration_date: java.time.LocalDate,
  last_login_date: java.time.LocalDateTime,
  preferences: Map[String, String],
  roles: List[String]
)

End file

case class User(
  id: Long,
  username: String,
  email: String,
  firstName: String,
  lastName: String,
  age: Int,
  gender: String,
  phoneNumber: String,
  address: String,
  city: String,
  country: String,
  postalCode: String,
  occupation: String,
  company: String,
  salary: Double,
  isActive: Boolean,
  registrationDate: java.time.LocalDate,
  lastLoginDate: java.time.LocalDateTime,
  preferences: Map[String, String],
  roles: List[String]
)

View Diff

5,6c5,6
<   first_name: String,
<   last_name: String,
---
>   firstName: String,
>   lastName: String,
9c9
<   phone_number: String,
---
>   phoneNumber: String,
13c13
<   postal_code: String,
---
>   postalCode: String,
17,19c17,19
<   is_active: Boolean,
<   registration_date: java.time.LocalDate,
<   last_login_date: java.time.LocalDateTime,
---
>   isActive: Boolean,
>   registrationDate: java.time.LocalDate,
>   lastLoginDate: java.time.LocalDateTime,

Solutions by @DavidJArnold:

Created by: @pacuna Tweet

56 active golfers, 150 entries

Solutions by @DavidJArnold: