--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/spi/ForeignCallsProvider.java	Tue Apr 23 14:09:54 2019 -0400
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/spi/ForeignCallsProvider.java	Tue Apr 23 22:55:09 2019 +0200
@@ -61,4 +61,9 @@
      * Gets the linkage for a foreign call.
      */
     ForeignCallLinkage lookupForeignCall(ForeignCallDescriptor descriptor);
+
+    /**
+     * Return true if the foreign call has a binding.
+     */
+    boolean isAvailable(ForeignCallDescriptor descriptor);
 }