diff --git a/src/applications/transactions/editengine/PhabricatorEditEngineAPIMethod.php b/src/applications/transactions/editengine/PhabricatorEditEngineAPIMethod.php
--- a/src/applications/transactions/editengine/PhabricatorEditEngineAPIMethod.php
+++ b/src/applications/transactions/editengine/PhabricatorEditEngineAPIMethod.php
@@ -95,7 +95,7 @@
       $section[] = $type->getConduitDescription();
 
       $type_documentation = $type->getConduitDocumentation();
-      if (strlen($type_documentation)) {
+      if (phutil_nonempty_string($type_documentation)) {
         $section[] = $type_documentation;
       }
 
diff --git a/src/applications/transactions/editfield/PhabricatorEditField.php b/src/applications/transactions/editfield/PhabricatorEditField.php
--- a/src/applications/transactions/editfield/PhabricatorEditField.php
+++ b/src/applications/transactions/editfield/PhabricatorEditField.php
@@ -169,11 +169,20 @@
     return $this->conduitDescription;
   }
 
+  /**
+   * Set the Conduit documentation in raw Remarkup.
+   * @param  string|null $conduit_documentation
+   * @return self
+   */
   public function setConduitDocumentation($conduit_documentation) {
     $this->conduitDocumentation = $conduit_documentation;
     return $this;
   }
 
+  /**
+   * Get the Conduit documentation in raw Remarkup.
+   * @return string|null
+   */
   public function getConduitDocumentation() {
     return $this->conduitDocumentation;
   }