14 lines
270 B
Java
14 lines
270 B
Java
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package com.iluwatar.abstractdocument.domain;
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import java.util.Optional;
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import com.iluwatar.abstractdocument.Document;
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public interface HasPrice extends Document {
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default Optional<Number> getPartner() {
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return Optional.ofNullable((Number) get("price"));
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}
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}
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