A filter for adding in additional third-party sources. If you want to write your own content source, but still want it to be available to SlideDeck 2, you can hook into this filter and add your source to the array it processes. This acts as a coupler between your custom source and SlideDeck 2.
To add additional custom sources, you would hook into this filter with the following code:
<?php add_filter( 'slidedeck_get_sources', 'my_function_name', 10, 1 ); ?>
The slidedeck_get_sources filter receives1 parameter
(array) Array of existing content sources
Return an array of the sources
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