diff -Natur bnd-5.1.1.REL-orig/maven/bnd-maven-plugin/src/main/java/aQute/bnd/maven/plugin/AbstractBndMavenPlugin.java bnd-5.1.1.REL/maven/bnd-maven-plugin/src/main/java/aQute/bnd/maven/plugin/AbstractBndMavenPlugin.java
--- bnd-5.1.1.REL-orig/maven/bnd-maven-plugin/src/main/java/aQute/bnd/maven/plugin/AbstractBndMavenPlugin.java	2020-06-16 23:03:04.000000000 +0200
+++ bnd-5.1.1.REL/maven/bnd-maven-plugin/src/main/java/aQute/bnd/maven/plugin/AbstractBndMavenPlugin.java	2021-10-17 22:35:26.583884078 +0200
@@ -56,7 +56,6 @@
 
 import aQute.bnd.build.Project;
 import aQute.bnd.header.OSGiHeader;
-import aQute.bnd.maven.lib.configuration.BeanProperties;
 import aQute.bnd.osgi.Builder;
 import aQute.bnd.osgi.Constants;
 import aQute.bnd.osgi.FileResource;
diff -Natur bnd-5.1.1.REL-orig/maven/bnd-maven-plugin/src/main/java/aQute/bnd/maven/plugin/BeanProperties.java bnd-5.1.1.REL/maven/bnd-maven-plugin/src/main/java/aQute/bnd/maven/plugin/BeanProperties.java
--- bnd-5.1.1.REL-orig/maven/bnd-maven-plugin/src/main/java/aQute/bnd/maven/plugin/BeanProperties.java	1970-01-01 01:00:00.000000000 +0100
+++ bnd-5.1.1.REL/maven/bnd-maven-plugin/src/main/java/aQute/bnd/maven/plugin/BeanProperties.java	2021-10-17 22:35:31.151908789 +0200
@@ -0,0 +1,101 @@
+package aQute.bnd.maven.plugin;
+
+import static java.lang.invoke.MethodHandles.publicLookup;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.reflect.Array;
+import java.lang.reflect.Modifier;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Properties;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class BeanProperties extends Properties {
+        private static final Logger             logger                          = LoggerFactory.getLogger(BeanProperties.class);
+
+        private static final Pattern    KEY_P                           = Pattern
+                .compile("(?<name>[^\\.\\[]+)(?:\\[(?<index>\\d+)\\])?\\.?");
+        private static final long               serialVersionUID        = 1L;
+
+        protected Properties                    defaults;
+
+        public BeanProperties() {
+                this(null);
+        }
+
+        public BeanProperties(Properties defaults) {
+                this.defaults = defaults;
+        }
+
+        @Override
+        public String getProperty(String key) {
+                final Matcher m = KEY_P.matcher(key);
+                if (!m.find()) {
+                        return defaultValue(key);
+                }
+                String name = m.group("name");
+                Object value = value(name, get(name), m.group("index"));
+                while ((value != null) && m.find()) {
+                        name = m.group("name");
+                        value = value(name, getField(value, name), m.group("index"));
+                }
+                return (value != null) ? value.toString() : defaultValue(key);
+        }
+
+        private String defaultValue(String key) {
+                return (defaults != null) ? defaults.getProperty(key) : null;
+        }
+
+        private Object getField(Object target, String fieldName) {
+                try {
+                        String getterSuffix = Character.toUpperCase(fieldName.charAt(0)) + fieldName.substring(1);
+                        Class<?> targetClass = target.getClass();
+                        while (!Modifier.isPublic(targetClass.getModifiers())) {
+                                targetClass = targetClass.getSuperclass();
+                        }
+                        MethodHandle mh;
+                        try {
+                                mh = publicLookup().unreflect(targetClass.getMethod("get" + getterSuffix));
+                        } catch (NoSuchMethodException nsme) {
+                                mh = publicLookup().unreflect(targetClass.getMethod("is" + getterSuffix));
+                        }
+                        return mh.invoke(target);
+                } catch (Error e) {
+                        throw e;
+                } catch (Throwable e) {
+                        logger.debug("Could not find getter method for field {}", fieldName, e);
+                }
+                return null;
+        }
+
+        private Object value(String name, Object value, String index) {
+                if ((value == null) || (index == null)) {
+                        return value;
+                }
+                try {
+                        int i = Integer.parseInt(index);
+                        if (value instanceof List) {
+                                return ((List<?>) value).get(i);
+                        } else if (value instanceof Iterable) {
+                                if (i < 0) {
+                                        throw new IndexOutOfBoundsException("index < 0");
+                                }
+                                Iterator<?> iter = ((Iterable<?>) value).iterator();
+                                for (; i > 0; i--) {
+                                        iter.next();
+                                }
+                                return iter.next();
+                        } else if (value.getClass()
+                                .isArray()) {
+                                return Array.get(value, i);
+                        }
+                } catch (Exception e) {
+                        logger.debug("Could not find field {}[{}]", name, index, e);
+                }
+                return value;
+        }
+}