+ Arguments are pulled from the variable argument list specified by Marker.\r
+ Marker is constructed based on the contents of the format string. \r
+ This function returns the number of Unicode characters in the produced output buffer, \r
+ not including the Null-terminator.\r
+ If BufferSize is 0 or 1, then no output buffer is produced and 0 is returned.\r
+\r
+ If BufferSize > 1 and StartOfBuffer is NULL, then ASSERT().\r
+ If BufferSize > 1 and StartOfBuffer is not aligned on a 16-bit boundary, then ASSERT().\r
+ If BufferSize > 1 and FormatString is NULL, then ASSERT().\r
+ If BufferSize > 1 and FormatString is not aligned on a 16-bit boundary, then ASSERT().\r
+ If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than \r
+ PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator, then ASSERT().\r
+ If PcdMaximumUnicodeStringLength is not zero, and produced Null-terminated Unicode string\r
+ contains more than PcdMaximumUnicodeStringLength Unicode characters not including the\r
+ Null-terminator, then ASSERT().\r
+\r
+ @param StartOfBuffer A pointer to the output buffer for the produced Null-terminated \r
+ Unicode string.\r
+ @param BufferSize The size, in bytes, of the output buffer specified by StartOfBuffer.\r
+ @param FormatString Null-terminated Unicode format string.\r
+ @param Marker BASE_LIST marker for the variable argument list.\r
+ \r
+ @return The number of Unicode characters in the produced output buffer, not including the\r
+ Null-terminator.\r
+\r
+**/\r
+typedef\r
+UINTN\r
+(EFIAPI *UNICODE_BS_PRINT)(\r
+ OUT CHAR16 *StartOfBuffer,\r
+ IN UINTN BufferSize,\r
+ IN CONST CHAR16 *FormatString,\r
+ IN BASE_LIST Marker\r
+ );\r
+\r
+/**\r
+ Produces a Null-terminated Unicode string in an output buffer based on a Null-terminated \r
+ Unicode format string and variable argument list.\r
+ \r
+ Produces a Null-terminated Unicode string in the output buffer \r
+ specified by StartOfBuffer and BufferSize.\r
+ The Unicode string is produced by parsing the format string specified by FormatString.\r
+ Arguments are pulled from the variable argument list based on the contents of the format string.\r
+ This function returns the number of Unicode characters in the produced output buffer, \r
+ not including the Null-terminator.\r