You can put it as a "suffix" to almost any type of string. Try to append ".Trim" within the IDE.
There is also a combination of Suffixes possible:
Dim sample As String = " My NaMe Is DoNaLd DuCk "
Log(sample.Trim.ToLowerCase)
Log(sample.Trim.ToUpperCase)
Log(sample.SubString2(3,6))
1st log-line creates -> 'my name is donald duck'
2nd log-line creates -> 'MY NAME IS DONALD DUCK'
3rd log-line creates -> 'y N'
Play with it!