Extending provided services
You can extend the capabilities of the integration's provided services by using the "extensionClass" argument, which contains services to use before and after invocation.
About this task
During xsl customization, when importing the contents of one style
sheet into another using xsl:import, the URI of the external XSL resource is required. For
example:
<xsl:import href="extensions/global/template/xsl/scwc/custom/External_GetOrderPriceToProcessOrderInput.xsl"/>