@ModuleOption("whether to prevent the same file from being processed twice")
	public void setPreventDuplicates(boolean preventDuplicates) {
		this.preventDuplicates = preventDuplicates;
	}
Holds module options metadata about the {@code file} source.

@author Eric Bottard
@author Gary Russell
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/modules/metadata/FileSourceOptionsMetadata.java