attempt for new tests(which compile but do not yet even fail)

library/src/main/java/org/mustangproject/Charge.java

@@ -0,0 +1,60 @@
+package org.mustangproject;
+
+import org.mustangproject.ZUGFeRD.IZUGFeRDAllowanceCharge;
+import org.mustangproject.ZUGFeRD.IZUGFeRDExportableContact;
+
+import java.math.BigDecimal;
+
+public class Charge implements IZUGFeRDAllowanceCharge {
+	protected String reason;
+	protected BigDecimal totalAmount;
+	protected BigDecimal taxPercent;
+	protected String categoryCode;
+
+	public Charge(BigDecimal totalAmount, BigDecimal taxPercent, String categoryCode, String reason) {
+		this.totalAmount=totalAmount;
+		this.taxPercent=taxPercent;
+		this.categoryCode=categoryCode;
+		this.reason=reason;
+	}
+
+	@Override
+	public String getReason() {
+		return reason;
+	}
+
+	public Charge setReason(String reason) {
+		this.reason = reason;
+		return this;
+	}
+
+	@Override
+	public BigDecimal getTotalAmount() {
+		return totalAmount;
+	}
+
+	public Charge setTotalAmount(BigDecimal totalAmount) {
+		this.totalAmount = totalAmount;
+		return this;
+	}
+
+	@Override
+	public BigDecimal getTaxPercent() {
+		return taxPercent;
+	}
+
+	public Charge setTaxPercent(BigDecimal taxPercent) {
+		this.taxPercent = taxPercent;
+		return this;
+	}
+
+	@Override
+	public String getCategoryCode() {
+		return categoryCode;
+	}
+
+	public Charge setCategoryCode(String categoryCode) {
+		this.categoryCode = categoryCode;
+		return this;
+	}
+}