You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: placeholder_component.rb
    path of file: ./repos/polaris_view_components/app/components/polaris
    
    the code of the file until where you have to start completion: module Polaris
  class PlaceholderComponent < Polaris::Component
    def initialize(height: "auto", width: "auto", label: nil, show_border: false)
      @label = label
   
    
    def call
      if @label.present?
        render(Polaris::BaseComponent.new(**@system_arguments)) do
          render(Polaris::InlineComponent.new(align: :center)) do
            tag.div(style: "color: #fff;") do
              render(Polaris::TextComponent.new(as: :h2, variant: :bodyMd)) do
                @label
              end
            end
          end
        end
      else
        render(Polaris::BaseComponent.new(**@system_arguments)) { content }
      end