in app/components/primer/popover_component.rb [108:119]
def initialize(**system_arguments)
@system_arguments = deny_tag_argument(**system_arguments)
@system_arguments[:tag] = :div
@system_arguments[:classes] = class_names(
system_arguments[:classes],
"Popover"
)
@system_arguments[:position] ||= :relative
@system_arguments[:right] = false unless @system_arguments.delete(:right)
@system_arguments[:left] = false unless @system_arguments.delete(:left)
end