# File lib/innate/node.rb, line 1041
    def node_from_backtrace(backtrace)
      filename, lineno = backtrace[0].split(':', 2)
      regexp = /^\s*class\s+(\S+)/
      File.readlines(filename)[0..lineno.to_i].reverse.find{|ln| ln =~ regexp }
      const_get($1)
    end