func Call
Call returns a URL for the specified function with optional key-value arguments, for the current realm.
Realm represents a specific realm for generating tx links.
TxBuilder provides a fluent interface for building transaction URLs
AddArgs adds multiple key-value pairs at once. Arguments should be provided as pairs: AddArgs("key1", "value1", "key2", "value2").
SetSend adds a send amount. (Only one send amount can be specified.)
URL generates the final URL using the standard $help&func=name format.