U:RDoc::AnyMethod[iI"get_one_optional_argument:EFI"+Gem::Command#get_one_optional_argument;TF:publico:RDoc::Markup::Document:@parts[o:RDoc::Markup::Paragraph; [I"MGet a single optional argument from the command line. If more than one ;TI"Largument is given, return only the first. Return nil if none are given.;T: @fileI"lib/rubygems/command.rb;T:0@omit_headings_from_table_of_contents_below000[I"();T@FI"Command;TcRDoc::NormalClass00