Saving PDF as Plain text

Hello.  I am attempting to save all PDFs within a folder as text.  To do this i am running an action calling a JavaScript and using this.saveAs

When the script runs attempting to save as Plain text, some PDFs fail as they cannot be tagged.  I am therefore curious if a JS can be implemented such that it attempts to save as plain text, and if that fails save as accessible text.

this.saveAs("**filepath**”+ this.documentFileName + "_accessformat.txt","com.adobe.acrobat.accesstext");

this.saveAs("**filepath**”+ this.documentFileName + "_accessformat.txt","com.adobe.acrobat.plain-text");