@Override
					public String[] getPropertyNames() {
						return options.keySet().toArray(new String[options.size()]);
					}
An implementation of {@link ModuleOptionsMetadata} that only knows how to list options and does not support advanced
facilities such as derived options, profile activation or validation.

@author Eric Bottard
@author David Turanski
spring-xd-module/src/main/java/org/springframework/xd/module/options/SimpleModuleOptionsMetadata.java