Name what the declarations import, so it is not completed

E.g. a package imported only to declare a parameter's type is no
longer offered (see ScriptDialect#imported).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: gselzer

src/main/java/org/scijava/plugins/scripting/jython/JythonDialect.java

@@ -78,6 +78,13 @@ public List<String> imports(final Collection<String> types) {
 		return imports;
 	}
 
+	@Override
+	public String imported(final String statement) {
+		// NB: "import a.b" binds a.
+		return statement.startsWith("import ") ? statement.substring(7).split(
+			"[.\\s]")[0] : null;
+	}
+
 	/**
 	 * The packages or modules of the given types that a declaration refers to
 	 * (none for builtins, e.g. {@code str}).

src/test/java/org/scijava/plugins/scripting/jython/JythonCompletionTest.java

@@ -150,6 +150,8 @@ public void testScriptParameters() {
 		assertTrue(complete(header + "greeting.st").contains("greeting.strip"));
 		// Numbers are int, not java.lang.Integer.
 		assertFalse(complete(header + "count.intV").contains("count.intValue"));
+		// Packages imported only to declare those are not completed.
+		assertFalse(complete(header + "j").contains("java.lang"));
 	}
 
 	@Test

src/test/java/org/scijava/plugins/scripting/jython/JythonServerCompletionTest.java

@@ -135,6 +135,7 @@ public void testDeclarations() {
 		assertEquals(Arrays.asList("import array", "import java.util",
 			"import net.imglib2.img"), dialect.imports(Arrays.asList(
 				"net.imglib2.img.Img", "str", "java.util.Map$Entry", "array.array")));
+		assertEquals("net", dialect.imported("import net.imglib2.img"));
 		assertTrue(JythonServerPlugin.isJython(jython));
 	}
 }