String.trimIndent

Remove all indentation whitespace from a string.

If options is -keepRelative, it will only remove the excess indentation, while retaining the relative indentation between lines.

$text = '''

    Line 1
        Line 2
        Line 3

'''

$text.trimIndent()
//= 'Line 1\nLine 2\nLine 3'

$text.trimIndent(-keepRelative)
//= 'Line 1\n    Line 2\n    Line 3'