Fix javadoc warnings

DEVSIX-4978

Autoported commit.
Original commit hash: [4231f2839]
Manual files:
forms/src/main/java/com/itextpdf/forms/xfa/XfaForm.java

Author: Artyom Yanchevsky

itext/itext.forms/itext/forms/PdfPageFormCopier.cs

@@ -58,7 +58,6 @@ namespace iText.Forms {
     /// A sample implementation of the {#link IPdfPageExtraCopier} interface which
     /// copies only AcroForm fields to a new page.
     /// <para />
-    /// <para />
     /// NOTE: While it's absolutely not necessary to use the same PdfPageFormCopier instance for copying operations,
     /// it is still worth to know that PdfPageFormCopier uses some caching logic which can potentially improve performance
     /// in case of the reusing of the same instance.

itext/itext.forms/itext/forms/xfa/XfaForm.cs

@@ -56,6 +56,7 @@ source product.
 
 namespace iText.Forms.Xfa
 {
+	
 	/// <summary>Processes XFA forms.</summary>
 	public class XfaForm
 	{

itext/itext.forms/itext/forms/xfdf/XfdfObject.cs

@@ -132,21 +132,25 @@ public virtual void SetFields(FieldsObject fields) {
         }
 
         /// <summary>Gets the annots element, a child of the xfdf element and is the container for annot elements.</summary>
+        /// <returns>the annots element</returns>
         public virtual AnnotsObject GetAnnots() {
             return annots;
         }
 
         /// <summary>Sets the annots element, a child of the xfdf element and is the container for annot elements.</summary>
+        /// <param name="annots">element</param>
         public virtual void SetAnnots(AnnotsObject annots) {
             this.annots = annots;
         }
 
         /// <summary>Gets the list of attributes of xfdf object.</summary>
+        /// <returns>the list of attributes</returns>
         public virtual IList<AttributeObject> GetAttributes() {
             return attributes;
         }
 
         /// <summary>Sets the list of attributes of xfdf object.</summary>
+        /// <param name="attributes">list of attributes objects</param>
         public virtual void SetAttributes(IList<AttributeObject> attributes) {
             this.attributes = attributes;
         }

port-hash

@@ -1 +1 @@
-af022ae76dc390684ce0d0660538c47666d6437d
+4231f28399cc754a916c8ed1a2f66a55db364bc7