---input---
def < (y: String): Boolean

---tokens---
'def'         Keyword
' '           Text
'<'           Name.Function
' '           Text
'('           Punctuation
'y'           Name
':'           Punctuation
' '           Text
'String'      Name.Class
')'           Punctuation
':'           Punctuation
' '           Text
'Boolean'     Name.Class
'\n'          Text
