module Builder
module Builder::XChar
module Kernel
class BlankSlate
class Builder::IllegalBlockError
class Builder::XmlBase
class Builder::XmlEvents
class Builder::XmlMarkup
class Fixnum
class Module
class Object
class String
builder
3.1.0
# _nested_structures
def _nested_structures(block) @level += 1 block.call(self) ensure @level -= 1 end