updated javadoc

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

@@ -84,8 +84,8 @@ public class Invoice implements IExportableTransaction {
 
 	/***
 	 * switch type to invoice correction and refer to document number
-	 * @param number
+	 * @param number the invoice number to be corrected
-	 * @return
+	 * @return this object (fluent setter)
 	 */
 	public Invoice setCorrection(String number) {
 		setBuyerOrderReferencedDocumentID(number);
@@ -428,7 +428,7 @@ public class Invoice implements IExportableTransaction {
 
 	/***
 	 * checks if all required items are set in order to be able to export it
-	 * @return
+	 * @return true if all required items are set
 	 */
 	public boolean isValid() {
 		return (dueDate != null) && (sender != null) && (sender.getTaxID() != null) && (sender.getVATID() != null) && (recipient != null);

library/src/main/java/org/mustangproject/ZUGFeRD/IExportableTransaction.java

@@ -301,7 +301,7 @@ public interface IExportableTransaction  {
 	 * get payment terms. if set, getPaymentTermDescription() and getDueDate() are
 	 * ignored
 	 * 
-	 * @return
+	 * @return the IZUGFeRDPaymentTerms of the invoice
 	 */
 	default IZUGFeRDPaymentTerms getPaymentTerms() {
 		return null;
@@ -310,7 +310,7 @@ public interface IExportableTransaction  {
 	/**
 	 * returns if a rebate agreements exists
 	 * 
-	 * @return
+	 * @return true if a agreement exists
 	 */
 	default boolean rebateAgreementExists() {
 		return false;
@@ -418,7 +418,7 @@ public interface IExportableTransaction  {
 	
 	/***
 	 * delivery address, i.e. ram:ShipToTradeParty (only supported for zf2)
-	 * @return
+	 * @return the IZUGFeRDExportableTradeParty delivery address
 	 */
 
 	default IZUGFeRDExportableTradeParty getDeliveryAddress() {

library/src/main/java/org/mustangproject/ZUGFeRD/IZUGFeRDExportableTradeParty.java

@@ -132,7 +132,7 @@ public interface IZUGFeRDExportableTradeParty {
 
 	/***
 	 * obligatory for sender but not for recipient
-	 * @return
+	 * @return the tax id as string
 	 */
 	default String getTaxID() {
 		return null;

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java

@@ -154,8 +154,8 @@ public class ZUGFeRD2PullProvider implements IXMLProvider, IAbsoluteValueProvide
 
 	/**
 	 * which taxes have been used with which amounts in this transaction, empty for
-	 * no taxes, or e.g. 19=>190 and 7=>14 if 1000 Eur were applicable to 19% VAT
+	 * no taxes, or e.g. 19:190 and 7:14 if 1000 Eur were applicable to 19% VAT
-	 * (=>190 EUR VAT) and 200 EUR were applicable to 7% (=>14 EUR VAT) 190 Eur
+	 * (=190 EUR VAT) and 200 EUR were applicable to 7% (=14 EUR VAT) 190 Eur
 	 *
 	 * @return which taxes have been used with which amounts in this invoice
 	 */

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromA3.java

@@ -168,6 +168,7 @@ public class ZUGFeRDExporterFromA3 extends XRExporter implements IZUGFeRDExporte
 	/***
 	 * internal helper: return the name of the file attachment for the given zf/fx version
 	 * @param ver the zf/fx version
+	 * @param profile which profile to be used, e.g. Profiles.getByName("EN16931")
 	 * @return the filename of the file to be embedded
 	 */
 	public String getFilenameForVersion(int ver, Profile profile) {
@@ -192,6 +193,7 @@ public class ZUGFeRDExporterFromA3 extends XRExporter implements IZUGFeRDExporte
 	 * Generate ZF2.1 files with filename factur-x.xml
 	 *
 	 * @deprecated
+	 * @return this (fluent setter)
 	 */
 	public ZUGFeRDExporterFromA3 setFacturX() {
 		isFacturX = true;

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java

@@ -233,9 +233,9 @@ public class ZUGFeRDImporter {
 		return result;
 	}
 
-
+	/***
-	/**
+	 * Wrapper for protected method extractString
-	 * Wrapper for protected method exracteString
+	 * @param xpathStr
 	 * @return the extracted String for the specific path in the document
 	 */
 	public String wExtractString(String xpathStr) {