if (properties != null && !properties.isEmpty()) {
            return properties.entrySet().stream()
                    .collect(Collectors.toMap(e -> String.valueOf(e.getKey()), e -> String.valueOf(e.getValue())));

        } else {
            return null;
        }
    }

    @SuppressWarnings("unchecked")

private Object _key; private Object _value; private int _index; private FastMap$EntryImpl _previous; private FastMap$EntryImpl _next; private FastMap$EntryImpl _before; private FastMap$EntryImpl _after; private void FastMap$EntryImpl(); public Object getKey(); public Object getValue(); public Object setValue(Object); public boolean equals(Object); public int hashCode(); public String toString(); } org/codehaus/plexus/util/FastMap$EntrySet$1.class package org.codehaus.plexus.util; synchronized class FastMap$EntrySet$1...