var used1 = """var unused1 = 1"""
var used2 = """
    var unused2 = 2
"""
var used3 = """var unused3a = 3""" + """var unused3b = 3"""
var used4 = """..."val unused4"..."""
var used5 = """${process("""var unused5 = 5""")}"""
var used6 = """"val unused6=6""""
var used7 = """""var unused6=6"""""
