gets the property and casts to the appropriate type concode_field_sep String variableName concode_elem_sep int objectCounter concode_elem_sep JSObject jsObject concode_elem_sep IJavascriptRuntime runtime concode_elem_sep Map<JSObject,JavascriptObject> peerRegistry concode_field_sep Integer checkInteger concode_elem_sep Object checkUndefined concode_elem_sep Object invokeJavascript concode_elem_sep Object invokeJavascript concode_elem_sep T invokeJavascriptReturnValue concode_elem_sep T invokeJavascriptReturnValue concode_elem_sep void setProperty concode_elem_sep void setProperty concode_elem_sep void setProperty concode_elem_sep boolean isMemberDefined concode_elem_sep String getNextVariableName concode_elem_sep String getVariableName concode_elem_sep Boolean checkBoolean concode_elem_sep JSObject getJSObject