URI::LDAP#build_path_query

# File tmp/rubies/ruby-3.3.0/lib/uri/ldap.rb, line 146
def build_path_query
  @path = '/' + @dn

  query = []
  [@extensions, @filter, @scope, @attributes].each do |x|
    next if !x && query.size == 0
    query.unshift(x)
  end
  @query = query.join('?')
end