@ModuleOption("whether to use polling or not (no polling works with imap(s) only)")
	public void setUsePolling(boolean usePolling) {
		this.usePolling = usePolling;
	}
Captures options for the {@code mail} source module.

@author Eric Bottard
@author Gary Russell
@author Ilayaperumal Gopinathan
extensions/spring-xd-extension-mail/src/main/java/org/springframework/xd/mail/MailSourceOptionsMetadata.java