Print takes a document as well as a definition (optional) and prints it to the io.Writer.

PrintIndent is the same as Print but accepts an additional indent parameter to set indentation.

PrintString is the same as Print but returns a string instead of writing to an io.Writer.

PrintStringIndent is the same as PrintIndent but returns a string instead of writing to an io.Writer.

Printer walks a GraphQL document and prints it as a string.