# File lib/brakeman/processors/alias_processor.rb, line 642
  def process_op_asgn2 exp
    return process_default(exp) if exp[3] != "||""||"

    target = exp[1] = process(exp[1])
    value = exp[4] = process(exp[4])
    method = exp[2]

    match = Sexp.new(:call, target, method.to_s[0..-2].to_sym)

    unless env[match]
      env[match] = value
    end

    exp
  end