Can not invoke PdfExporterService from a plugin

Issue Summary

Invoking PdfExporterService from a plugin throws runtime exception

Steps to Reproduce

1. Add confluence-flyingpdf-plugin dependency as provided on your plugin pom

1. Add com.atlassian.confluence.extra.flyingpdf* to the osgi import section on your plugin pom

1. Import the PdfExporterService (@ComponentImport) on your bean

1. Call to method createPdfForPage(User a, AbstractPage b, String c, PageExportMetrics d) passing a new PageExportMetrics as the forth parameter.

Expected Results

Able to generate PDF

Actual Results

ClassNotFoundException: com.atlassian.confluence.extra.flyingpdf.analytic.PageExportMetrics is thrown.

Workaround

N/A