new scala_collection_mutable_StringBuilder(
)
new scala_collection_mutable_StringBuilder( capacity // java.lang.Int:Int )
new scala_collection_mutable_StringBuilder( str // java.lang.String:String )
new scala_collection_mutable_StringBuilder( underlying // java.lang.StringBuilder )
new scala_collection_mutable_StringBuilder( initCapacity, // java.lang.Int:Int initValue // java.lang.String:String )