api/src/main/java/org/apache/myfaces/core/api/shared/MessageUtils.java [240:277]:
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    public static Object getLabel(FacesContext facesContext, UIComponent component)
    {
        Object label = component.getAttributes().get("label");
        ValueExpression expression = null;
        if (label != null && 
            label instanceof String string && string.length() == 0 )
        {
            // Note component.getAttributes().get("label") internally try to 
            // evaluate the EL expression for the label, but in some cases, 
            // when PSS is disabled and f:loadBundle is used, when the view is 
            // restored the bundle is not set to the EL expression returns an 
            // empty String. It is not possible to check if there is a 
            // hardcoded label, but we can check if there is
            // an EL expression set, so the best in this case is use that, and if
            // there is an EL expression set, use it, otherwise use the hardcoded
            // value. See MYFACES-3591 for details.
            expression = component.getValueExpression("label");
            if (expression != null)
            {
                // Set the label to null and use the EL expression instead.
                label = null;
            }
        }
            
        if(label != null)
        {
            return label;
        }
        
        expression = (expression == null) ? component.getValueExpression("label") : expression;
        if(expression != null)
        {
            return expression;
        }
        
        //If no label is not specified, use clientId
        return component.getClientId( facesContext );
    }
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impl/src/main/java/org/apache/myfaces/util/MessageUtils.java [725:762]:
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    public static Object getLabel(FacesContext facesContext, UIComponent component)
    {
        Object label = component.getAttributes().get("label");
        ValueExpression expression = null;
        if (label != null && 
            label instanceof String string && string.length() == 0 )
        {
            // Note component.getAttributes().get("label") internally try to 
            // evaluate the EL expression for the label, but in some cases, 
            // when PSS is disabled and f:loadBundle is used, when the view is 
            // restored the bundle is not set to the EL expression returns an 
            // empty String. It is not possible to check if there is a 
            // hardcoded label, but we can check if there is
            // an EL expression set, so the best in this case is use that, and if
            // there is an EL expression set, use it, otherwise use the hardcoded
            // value. See MYFACES-3591 for details.
            expression = component.getValueExpression("label");
            if (expression != null)
            {
                // Set the label to null and use the EL expression instead.
                label = null;
            }
        }
            
        if(label != null)
        {
            return label;
        }
        
        expression = (expression == null) ? component.getValueExpression("label") : expression;
        if(expression != null)
        {
            return expression;
        }
        
        //If no label is not specified, use clientId
        return component.getClientId( facesContext );
    }
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