/guava/android/guava/src/com/google/common/base/Preconditions.java
if ( reference == null) {   throw new NullPointerException( lenientFormat( errorMessageTemplate, errorMessageArgs) ) ; }
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boolean expression, String errorMessageTemplate, @CheckForNull Object p1) { if (!expression) { throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1)); } } public static void checkState(boolean expression, String errorMessageTemplate, char p1, char p2) { <extra_id_0> throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2)); } } public static void checkState(boolean expression, String errorMessageTemplate, char p1, int p2) { if (!expression) { throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2));