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package org.glassfish.hk2.api;

/**
 * This is used to describe the values to be given to
 * the method in the {@link ServiceLocator#assistedInject(Object, java.lang.reflect.Method, MethodParameter...)}
 * method
 * 
 * @author jwells
 *
 */
public interface MethodParameter {
    /**
     * Returns the index of the parameter for which
     * the {@link #getParameterValue()} result should
     * go
     * 
     * @return The index of the parameter in the
     * method where the parameter value should go
     */
    public int getParameterPosition();
    
    /**
     * The value that should be given to the
     * method at the parameter position specified
     * by {@link #getParameterPosition()}
     * 
     * @return The possibly null parameter value
     * that should be passed to the method at the
     * given index
     */
    public Object getParameterValue();

}