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/**
* @param {?string} str
* @return {boolean} Whether the given string is null or is the empty string.
* @public
*/
Platform.stringIsNullOrEmpty = function(str) {
return !str;
};
/**
* @param {?string} str
* @return {string} Original str, if it is non-null. Otherwise empty string.
*/
Platform.nullToEmpty = function(str) {
return str || "";
};
/**
* @param {?string} str
* @return {string} Original str, if it is non-empty. Otherwise null;
*/
Platform.emptyToNull = function(str) {
return str || null;
};
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