toString
Converts a value to a String, using the given character set if the input type is "bytes". For example, given a schema such as:
{ "type": "record", "name": "events", "fields": [ { "name": "name", "type": "string" }, { "name": "bytes", "type" : "bytes"} ] }
and a record such as:
{ "name" : "My Event", "bytes" : "Hello World!" }
The following record path would parse the bytes field into a String:
toString( /bytes, "UTF-8")