A strategy that specifies what happens to the existing configuration value after changing the default value.
A string representation of an update strategy that is used in configuration files.
Keep the existing value.
Update the configuration value if it has not been modified.
Override the existing value to the new default value.
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.