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diff --git a/src/main/java/eu/svjatoslav/commons/cli_helper/parameter_parser/ParameterCount.java b/src/main/java/eu/svjatoslav/commons/cli_helper/parameter_parser/ParameterCount.java
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+++ b/src/main/java/eu/svjatoslav/commons/cli_helper/parameter_parser/ParameterCount.java
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+/*
+ * Svjatoslav Commons - shared library of common functionality. Author: Svjatoslav Agejenko.
+ * This project is released under Creative Commons Zero (CC0) license.
+ */
+package eu.svjatoslav.commons.cli_helper.parameter_parser;
+
+/**
+ * This enum is used to define how many parameters con be given to particular option.
+ */
+public enum ParameterCount {
+
+    /**
+     * Option has no parameters.
+     */
+    NONE,
+    /**
+     * Option has exactly one parameter.
+     */
+    SINGLE,
+
+    /**
+     * Option can have any amount of parameters.
+     */
+    MULTI
+}