Scattering on structs: It's weird!

data/permit.md

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+# Official Permit
+
+I can do what I want.

wholet-nested.json

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+{
+  "wholet.files": [["data/permit.md"], ["data/permit.md"]],
+}

wholet-nested.wdl

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+# This is not a valid WDL. I'm not quite sure why. Compare to the functional wholet.wdl
+
+version 1.0
+
+struct Dog {
+	String breed
+	Float age_years
+	Array[File] permit
+}
+
+task out {
+	input {
+		Dog who
+	}
+    command <<<
+        echo "I can see a ~{who.breed} that is ~{who.age_years} years old"
+        cat ~{sep='' who.permit}
+    >>>
+
+    runtime {
+		docker: "ubuntu:latest"
+		preemptible: 1
+	}
+
+	output {
+		Dog out = who
+	}
+}
+
+workflow wholet {
+	input {
+		Array[Array[File]] files
+	}
+
+	Dog pompey = {"breed": "King Charles Cavalier Spaniel", "age_years": 4.5, "permit": files[0]}
+	Dog gremlin = {"breed": "kind of weird terrier", "age_years": 0.3, "permit": files[1]}
+
+	Array[Dog] thedogs = [pompey, gremlin]
+
+    scatter(dog in thedogs) {
+    	call out {
+	        input:
+	            who = dog
+	    }
+	}
+}

wholet.json

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+{
+  "wholet.files": ["data/permit.md", "data/permit.md"],
+}

wholet.wdl

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+version 1.0
+
+struct Dog {
+	String breed
+	Float age_years
+	File permit
+}
+
+task out {
+	input {
+		Dog who
+	}
+    command <<<
+        echo "I can see a ~{who.breed} that is ~{who.age_years} years old"
+        cat ~{who.permit}
+    >>>
+
+    runtime {
+		docker: "ubuntu:latest"
+		preemptible: 1
+	}
+
+	output {
+		Dog out = who
+	}
+}
+
+workflow wholet {
+	input {
+		Array[File] files
+	}
+
+	Dog pompey = {"breed": "King Charles Cavalier Spaniel", "age_years": 4.5, "permit": files[0]}
+	Dog gremlin = {"breed": "kind of weird terrier", "age_years": 0.3, "permit": files[1]}
+
+	Array[Dog] thedogs = [pompey, gremlin]
+
+    scatter(dog in thedogs) {
+    	call out {
+	        input:
+	            who = dog
+	    }
+	}
+}