masked

Returns string with masked symbols using the strictest security level.

This method is designed for masking sensitive secrets and provides maximum security by returning a consistent pattern that reveals no information about the original content.

Examples:

• null ->null

• "" ->null

• " " ->null

• "I" ->"***HIDDEN***"

• "Hi" ->"***HIDDEN***"

• "Hello" ->"***HIDDEN***"

• "VeryLongSecretKey123" ->"***HIDDEN***"