Enum class representing the roles a user can have in the system.
Roles define the level of access and permissions a user has within the application.
CUSTOMER: Represents a standard user with basic access.
MANAGER: Represents a user with managerial privileges.
Returns a representation of an immutable list of all enum entries, in the order they're declared.
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
Returns an array containing the constants of this enum type, in the order they're declared.