+<pre>
+requirements:
+ DockerRequirement:
+ dockerPull: "debian:9"
+ arv:dockerCollectionPDH: "feaf1fc916103d7cdab6489e1f8c3a2b+174"
+</pre>
+
+h1. Deprecated extensions
+
+The following extensions are deprecated because equivalent features are part of the CWL v1.1 standard.
+
+h2. cwltool:LoadListingRequirement
+
+For CWL v1.1 scripts, this is deprecated in favor of "loadListing":https://www.commonwl.org/v1.1/CommandLineTool.html#CommandInputParameter or "LoadListingRequirement":https://www.commonwl.org/v1.1/CommandLineTool.html#LoadListingRequirement
+
+In CWL v1.0 documents, the default behavior for Directory objects is to recursively expand the @listing@ for access by parameter references an expressions. For directory trees containing many files, this can be expensive in both time and memory usage. Use @cwltool:LoadListingRequirement@ to change the behavior for expansion of directory listings in the workflow runner.