src/main/java/org/fest/assertions/api/StringAssert.java
public @Nonnull
  StringAssert isEqualToIgnoringCase(@Nullable String expected) {
    strings.assertEqualsIgnoringCase(description, actual, expected);
    return this;
  }
public @Nonnull
  StringAssert isEqualToIgnoringCase(@Nullable String expected) {
    strings.assertEqualsIgnoringCase(description, actual, expected);
    return this;
  }
Verifies that the <em>actual</em> {@code String} is equal to the given one, ignoring case considerations.

@param expected the given {@code String} to compare the actual {@code String} to.
@return {@code this} assertion object.
@throws AssertionError if the <em>actual</em> {@code String} is not equal to the given one.